smoketest: add shim for every test to re-use common tasts

Currently every smoketest does the setup and destruction of the configsession
on its own durin setUp(). This creates a lot of overhead and one configsession
should be re-used during execution of every smoketest script.

In addiion a test that failed will leaf the system in an unconsistent state.
For this reason before the test is executed we will save the running config
to /tmp and the will re-load the config after the test has passed, always
ensuring a clean environment for the next test.

(cherry picked from commit 0f3def974fbaa4a26e6ad590ee37dd965bc2358f)

1 files changed, 7 insertions, 2 deletions

diff --git a/smoketest/scripts/cli/test_interfaces_vxlan.py b/smoketest/scripts/cli/test_interfaces_vxlan.py
index adbe7138b..0fba0f460 100755
--- a/smoketest/scripts/cli/test_interfaces_vxlan.py
+++ b/smoketest/scripts/cli/test_interfaces_vxlan.py
@@ -16,10 +16,13 @@
 
 import unittest
 
-from vyos.configsession import ConfigSession, ConfigSessionError
+from vyos.configsession import ConfigSession
+from vyos.ifconfig import Interface
+from vyos.util import get_interface_config
+
 from base_interfaces_test import BasicInterfaceTest
 
-class VXLANInterfaceTest(BasicInterfaceTest.BaseTest):
+class VXLANInterfaceTest(BasicInterfaceTest.TestCase):
     @classmethod
     def setUpClass(cls):
         cls._test_ip = True
@@ -32,6 +35,8 @@ class VXLANInterfaceTest(BasicInterfaceTest.BaseTest):
             'vxlan30': ['vni 30', 'remote 2001:db8:2000::1', 'source-address 2001:db8:1000::1'],
         }
         cls._interfaces = list(cls._options)
+        # call base-classes classmethod
+        super(cls, cls).setUpClass()
 
 if __name__ == '__main__':
     unittest.main(verbosity=2)